ISSN:
1573-9325
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. Nondimensional time at the moment of stress and strain-rate field stabilization is independent of the load applied σo and of the theoretical stress intensity factor, and is determined by the type of stressed condition prevailing. 2. In austenitic-class steels such as 18-8, the accumulated damage is localized mainly at an angle 45–50° to notch plane. 3. At high applied load levels (σo〉0.5σT) shear fracture of specimens takes place without the trunk crack penetrating to a considerable depth, but at low levels (σo〉0.4σT) it occurs by growth of the trunk crack. 4. The temperature dependence of the $$\dot J_C $$ -integral with regard to the moment of crack start is due to the temperature dependence of the creep rate. 5. If the small-scale yield is retained, the crack growth rate can be described by the modified stress intensity factor K cr * .
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01528935
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